使用RecyclerView设置自定义分割线

时间：2022-11-07 15:32:05

在安卓开发中，RecyclerView控件来做一些列表是非常方便的，如何使用在网上很多文章，这次着重来说一下怎么设置自定义分割线：

首先，我们来看一下怎么设置默认的分割线

 RecyclerView mRecyclerView;

 mRecyclerView.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL));

　　使用RecyclerView设置自定义分割线

这个能满足一般需求，但是如果我想使用自定义的分割线呢，看以下代码

  DividerItemDecoration divider = new DividerItemDecoration(this, DividerItemDecoration.VERTICAL);

        divider.setDrawable(ContextCompat.getDrawable(this, R.drawable.divider));

        mRecyclerView.addItemDecoration(divider);

使用RecyclerView设置自定义分割线

哈哈，这就发生了改变，把全部代码贴上来吧

package com.example.administrator.myapplication;

import android.content.ContextWrapper;

import android.os.Bundle;

import android.support.v4.content.ContextCompat;

import android.support.v7.app.AppCompatActivity;

import android.support.v7.widget.GridLayoutManager;

import android.support.v7.widget.LinearLayoutManager;

import android.support.v7.widget.DividerItemDecoration;

import android.support.v7.widget.RecyclerView;

import java.util.List;

import java.util.ArrayList;

public class BodyActivity extends AppCompatActivity {

    RecyclerView mRecyclerView;

    @Override

    protected void onCreate(Bundle saveInstanceState) {

        super.onCreate(saveInstanceState);

        setContentView(R.layout.activity_body);

        //1.获取控件

        mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);

        //设置布局方式

        mRecyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false));//线性布局

//        mRecyclerView.setLayoutManager(new GridLayoutManager(this,2));//网格布局

        mRecyclerView.setHasFixedSize(true); //是否重新计算大小

        //3.准备数据

        List<News> newsList = new ArrayList<>();

        News news;

        for (int i = 1; i <= 20; i++) {

            news = new News();

            news.setNewsTitle("java是世界上最好的语言" + i);

            news.setNewsSource("新华网" + i);

            news.setPublishTime("2018-8-6");

            newsList.add(news);

        }

        //添加Android自带的分割线

//      mRecyclerView.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL));

        //添加自定义的分割线

        DividerItemDecoration divider = new DividerItemDecoration(this, DividerItemDecoration.VERTICAL);

        divider.setDrawable(ContextCompat.getDrawable(this, R.drawable.divider));

        mRecyclerView.addItemDecoration(divider);

        //4.准备适配器

        NewsAdapter newsAdapter = new NewsAdapter(newsList);

        mRecyclerView.setAdapter(newsAdapter);

    }

}

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